RITA INVITED SOME FRIENDS TO THE AMC THEATER. THEY PAID $10.69 PER TICKET AND A POPCORN BUCKET FOR $22. THEY SPENT A TOTAL OF $64.76. WRITE AN EQUATION AND
DETERMINE THE NUMBER OF FRIENDS RITA INVITED
I DON’T UNDERSTAND

The path traveled by a bottlenose dolphin as it jumps out of water is modeled by the equation y=-0.4+3x, where t is the height above water and x is the horizontal distance in feet. if a beam of light is shone upward at an angle modeled by the equation x+y=10, at what height from the waters surface will the beam of light hit the dolphin